Filter or separator for pneumatic cleaners.



No. 874,481. PATENTED DEC. 24;, 1907,

0. B. BAKER,

FILTER 0R SEPARATORVFOR PNEUMATIC CLEANERS. urmonmn FILED MAYQ, 1906.

3 SHEETS-SHEET l.

Ig a

(l/ 1/ i, I at 66 i k 4 w 1* I W t l {I f j 21 No. 874,481. PATENTED'DEG. 24, 1907.

O. E. BAKER.

FILTER 0R SEPARATOR FOR PNEUMATIC CLEANERS.

APPLIOATIONTILED MAY 9, 1906.

3 SHEETSSHEET 2.

"iiiiiiY PATENTED EEG. 24, 1907.

No. 874,48l.

C. BAKER. FILTER 0R SEPARAIFOR FOR PNEUMATIC CLEANERS.

APPLICATION FILED MAYQ, 1906.

3 SHEETS-SHEET 3.

UNITED STATES PATENT OFFICE.

. r- CHARLES E. BAKER, OF CHICAGO, ILLINOIS.

FILTER onsnrana'ron' FOR rNEUMA'rIo cLEnimns.

.Separators for Pneumatic Cleaners; and I do hereby declare that the following is a full, clear, and exact-description of the same, reference being had to the drawings, and to the letters of reference marked thereon, which form a part of this s ecification.

This-invention re ates to filters or separators for pneumatic cleaners of that class in which the dust laden air is drawn through a body of water before reachin the pump.

Heretofore in devices of this class it has been diflicult to thoroughly separate the dust and dirt from'the air before it reaches the pum owing to the fact that the bubbles created y the air passing throu h the water carries a portion of the dust t erethrough and deposits it in the pump cylinder causing it to become clogged and subjectin it to a considerable wear and causing 1 requent breakage. I

It is important not only to prevent the dust reaching the pum cylinders but as well to make the device sel cleaning while in operation thus avoiding the necessity for stoppinguto clean the machine.

T e object of this invention is to rovide a device adapted to thoroughly brea up the air bubbles formed by the passage of the air through the water and to separate the dust therefrom thereby preventing it passing to the pum It is al o an object of the invention to provide a device capable of being thoroughly and easily cleaned after use.

A further object of the invention is to provide a very cheap and simple filter adapted to be a lied to cleaners as heretofore constructe if desired.

The invention consists in the matters hereinafter described and more fully pointed out and defined in the appended clalms.

In the drawings: Fi tical section of a devlce embodying my invention. Fig. 2 is a fragmentary side elevation thereof; Fig. 3 is a section taken on line 33 of Fig. 1. Fig. 4 is a section taken on line 44 of Fig. 1. Fig. 5 is a fragmentary side elevation of a cleaner having the dry and wet separators constructed. separately and provided with a device embo Specification of Letters Patent. v Applioationfiled May 9,1906. Serial No. 315,874.

gure 1 is a central yer-- Patented Dec. 24, 1967'.

ing my invention. Fig. 6 is an enlarged vertical central section of the filter shown in Fig; 5. a

, As shown in said. drawings: Referring. first to Figs.

1 to 4 inclusive in which th-e wet and dry se arating tanks are combined Are resents t e dry separator which comprises a s ell of any desired material and construction and is provided with an axially apertured bottom a therein having an n wardly directed internally screw threade flange a surround ing said aperture. A pipe ortube A has threaded engagement at its lower end insaid flange a, and extends upwardly in the separator A, flush with the top thereof and having threaded engagement on the top of said P p is a peripherally flanged collara I engaged the up- 1' cover or head a is rigidly per end of said shell and rests on said collar- .a and is also provided with an axial aperture therethrough in register with the ipe A.

A peripherally flanged, internal y thread,

ed collar a is bolted, as shown, through the head a and through the flange. of the collar (1 in axial alinement therewith. An exhaust pipe A is ri collar a and eads to an air pump of any desired construction (not shown). A connecting ipe B op'ens through a suitable aperture in t e head a and leads to the vacuum cleaning device of any suitable construction and idly connected in the flanged which also'is not shown and: adjacent the bottom of the shell is a door b through which the accumulated material may be removed.

Supported upon a suitable frame is the wet separator or water tank G which as shown is shaped at its u er end to conform,

to the bott'omof the shel shell is rigidly engaged. The lower portion of said water tank 0 tapers downwardly forming an inverted cone, at the apexbr lower end of which is a downwardly directed,

and in which said I internally threaded apertured boss c in which is engaged a pipe 0 connected at its lower end wit a three way valve 0. 'Said tank C as shown'is provided near the bottom thereof with an aperture in which is e aged a valved outlet pipe 0 by means of'iw riich the water may be drawn therefrom when cleani the tank and at the top of said tank is a v ifived pipe C opening thereinto by means of which the water is supplied to said tank from any suitable source.

A pipe E opens from the top of the tank A and leads downwardly and connects in the valve 0 thereby aflording communication between the tank Aand the receptacle C for the passage of air.

As the air is exhausted from the pipe or tube A and the upper portion of the tank C, which is but partially filled with water, the air in the dry separator 'A is drawn through the connecting pipe E and passes upwardly through the water in the tank C. For the purpose of preventing dust laden bubbles of air with an aperture through the top thereof and over said aperture and'rigidly engaged on the receptacle. 1s a screen (1 of any desired mate- .rial which together with a similar screen (i over the opening through the boss d acts to retain within said rece tacle any suitable granular material D suc as gravel or shot ca able of breaking up the air bubbles.

, 11 one side of the water tank 0 is provided a hand hole which is closed by a door (1 which may be secured thereon in any desired manner but as shown is hinged to the side of the tank and is provided with a glass therein by means of which the height and condition 0 the water and the action of the machine may be ascertained.

In the construction shown in Figs. 5 and 6 the dry and wet tanks indicated by F and F respectively are constructed separately and are connected by the pipe f which as shown,

- opens from the top of the dry tank and leads downwardly beneath the same and upwardly and opens through the delivery end f thereof into the water tank F above the normal level of the water. Connected in said pipe f between its lowest point and the end f is an axially a ertured rece tacle F similar to the receptace D and' w ch increases in size the water in said tank F.

from its bottom upwardly and extends to a height somewhat above the normal level of Said receptacle F as shown is provided in its bottom with a screen) and at the top thereof with a screen f which act to retain the gravel or other granularmaterial F therein though permiting the free passage of the water therethrough. Said casing F as shown is provided atits topwith an upwardly openi seat f upon which is carried a tube or cyliii lerf of transparent material, such as glass and which is connected at its to with the pipe end f by means of a suita le coupli throu h which and through the screenfiis a tie bo t f' which. acts to rigidly bind said coupling, cylinder and screen j in place.

2. In a device of the class described "below the normal level of the water therein and connects in the ipe f below the receptacle F and acts to supp y water thereto.

The 0 eration is as follows: Referring first to Figs. 1 to 'in'clusive the tank C having been filled to the desired depth with water and the air pump set in motion suction is produced in the pi e A thereby drawing the air from the tan A and suction pipe through the pipe E and into the water tank C. The heavier material is deposited in the dry separator A and such of the lighter dust and material as may be drawn into the pipe E passes u wardly into the receptacle 1). i The force of the current created by the suction through the receptacle D causes the gravel or other material therein to be greatly agitated thereby breaking u any air bubb es and separating the dirt rom the air before it escapes tothe ipe A. The water in the wet separator 0 course soon becomes very dirty and becomes almost a fine mud in the receptacle D but air pressure from below soon forces the dirt through the top of the receptacle and it settles to the bottom of the wet separator then to be drawn ofi through "the pipe C as clean water is admitted through the pipe C and without stopping the work.

When it is desired to clean the device after stopping the pump the water maybe drawn from the water tank 0 by means of the valved pi e C and from the receptacle D by means 0 the outlet or drain pipe 0 con ne'cted in the bottom of the valve C and when water is admitted through the flushing pipe C it acts to pass downwardly through said valved pipes 2 and 0 thereby washing the innersurfaces and cleaning the accumulated dirt from the gravel and screens.

In the construction shown in Figs. 5 and 6 the air. asses from the dry separating tank F and t ough the pipe f through the granular material in the receptacle F thereby breaking up the bubbles and thoroughly separating the dirt from the air before it enters the tank F.' When it is desired to clean the device it is only necessary to remove the bolt f thereby permitting the receptacle to be dis-connected from the pipe f and thoroughly cleaned, 1 y I claim as my invention: 1. In a 'dQVlGG of the class described the combination with a fluid tank of a dry tank above the same, an exhaust passage opening from the wet tank and leading axially through the dry tank, a pipe affording communication between-said tanks, granular material covered by water through which, the air from said pipe passes to the exhaust passage, an air inlet pipe opening into the dry tank and a doorin the side of the dry tank near the bottom thereof.

the 136 combination with a tank containin fluid, a

f removable'receptacle in'said tank a ordinga space between the same and wall of the tank andsupplied with fluid-'from said tank, filtering material in said receptacle, apipe supply-- ing air to.the receptacle from below, an exj haust passage through which the air from said receptacle passes and independent clean out pipes opening from the tank and receptac e. p

3. In a device of the class described. .the

- combination'with a dry separating tank of a water tank, a pipe connecting'said tanks, an exhaust pipe extending through the dry tank and communicating-with the wet tank, a receptacle rigidly engagedin the bottom of the wet tank, a screen on each end thereof and materialcontained within the receptacle and surrounded by-Water for breaking up the air bubbles assing through thesame.

4. In a evice of the class described the combination with a receptacle having water therein, of a water tank communicating with the top of the receptacle onl a dry tank, an exhaust passage leading om the water tank, a pipe communicating with the top of the dry tank and with the receptacle from below and granular material inclosed within the receptacle ada ted by agitation thereof to thorou hly brea the air bubbles to mix the partic es of matter carried thereby with the water in said receptacle and to permit v the escape of the air to the exhaust passa e.

g 5. In a'device of the class described t e combination with a dry separatingtank of a water. tank supporting the same and. filled with -water, a pipe extending centrally through the dry tank and opening into the wet tank,--mean.s for conducting air from the dry tank through the water tank and into said pipe, finely divided material in said water tank covered by the water therein, and

water tank partially v y-water therein through throughwhich said ai'rpasses, said material adapted by a itation of the same to'separate the dirt there om.

6. In a device of the class described the combination with a d separating tank of a led with water, an air pipeleading from the dry tank and comm icating with the water tank beneath the s ace of the water, a receptacle having which the air from pipe passes, 'meansin said receptacle said Tada'pted to prevent dust passing through the water, a valve controlled outlet for said water tank and a valve controlled outlet for Jthe receptacle. 171 Ina devicehf the class described the combination with a dfirfi separating tank of a water tank partially ed with water, an air pipe leading from the-dry tank and opening into the water tank beneath the surface of the water, a receptacle in said water tank through which the air passes, granular material inclosed in said receptacle and a pashr h., t J li water tank through a device of the class described the combination with a water tank partially filled with water, of a separating tank supported thereon, an exhaust pipe extending therethrough and opening at one end into the. water tank above the water and connected at the other with exhausting means,

a pipe connecting the bottom of the water tank with the top of the separating tank, a receptacle in said water tank, finely divided material therein and means for retaining said material in the receptacle while permitting free passage of air .and'water therethrough. v

10 Ina vacuum cleaning mechanism the combination with a dry separating tank, and a wet separating tank containing water of a valved pipe connecting the top of the dry with the bottom of the wet separator, an

inlet pipe in the top of the dry separator, a water inlet at the top and an outlet at the bottom of the wet separator, an exhaust pipe connected with the top of the web separator and extendin centrally through the dry tank, a removable receptacle rigidly engaged in the wet tank and granular material therein through which the air is drawn.

11. In a vacuum cleaning system the combination with an exhaust pipe of a tank connected'therewith containing Water, a downwardly tapering casin therein containing coarse granular material and adapted to communicate with said pipe, a screen in the top, thereof, water inlet and outlet pipes for said tank and an inlet pipe opening into said casing beneath the ranular material.

12; In a device 0? the class described the combination with a dry tank of a receptacle, a pipe opening from the dry tank and communicating with the receptacle from below, a water tank communicating with the top of the receptacle and adapted to supply water to the receptacle, granular material.

in said receptacle covered by the water adapted by agitation to break up air bubbles,

and means retaining the granular material in the receptacle when agitated and at rest and permitting the; dust laden air to pass ipto the receptacle and thepurified air there- 13. In a vacuum cleanin system the a threaded combination with afluid tank,

boss extending downwardly from the bottom of said tank, a receptacle in said tank and threaded into said boss, a dry tank, a pipe opening into the same, a pipe opening from the dry tank and communicating with said receptacle, an exhaust passage through which the air flows from the receptacle after passing through the water tank, material in the receptacle adapted to interrupt the air bubbles and to mix the material carried by the air with said water and an independent discharge pi e for said receptacle and water tank whereby either or both may be cleaned while the system is in operation.

14. In a vacuum cleaning device the combination with a water tank of a dry tank connected therewith, a pipe afiording communication between said tanks, an exhaust passage 0 ening from the wet tank axially through t e dry tank, a door in each tank, a receptacle in the water tank, granular material therein adapted to thoroughly mix the air, water covering the granular material to collect the particles of matter from said air said granular material agitated by the air passingtherethrough to aid in collecting the dust and means whereby either the receptacles or water tank may be cleaned in operation.

In testimony whereof I have hereunto subscribed my name in the presence of two subscribing witnesses.

CHARLES. E. BAKER.

Witnesses:

W. W. Wrrnnrnanmr,- WM. C. SMITH. 

